Two files in and one deduped list out.
Free for files up to 2,000 rows and 10 runs a day. Sign up for Dedupely to go further.
Combine lists without the overlap
Two exports share half their contacts. Pasting them together doubles those people. Every send after that goes out twice.
This tool lines up the columns and keeps one row per contact.
Merge where the lists came from
The two lists came from two systems. Marketing has one copy and sales has another. The spreadsheet fix lasts until the next sync.
Dedupely merges the duplicates inside the CRM and keeps new ones from settling in.
Use it from a script or an AI agent
POST https://dedupe.ly/tools/api/list-merger
{ "csvA": "Email,Name\n...", "csvB": "Email,Phone\n...", "keyColumns": ["Email"] }
MCP https://dedupe.ly/tools/mcp (tool: merge_lists)
Docs https://dedupe.ly/tools/api/openapi.json
Get started for free
20 free trial merges and as much free support as you need to get your duplicates under control.
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"Great support. They are on top of things, and answer questions very quickly."
Larry D
Pipedrive User
Pipedrive Marketplace Running CRM cleanup for clients? See the Partner Program
